Metalworking machine



Nov. 12, 1946. H, R W T 2,411,110

METALWORKING MACHINE Filed Dec. 3, 1942 14 Sheets-Sheet 1 gwurz/wtom W HIE lira? Nov. 12, 1946. u -r 2,411,110

METALWORKING MACHINE Filed Dec. 3, 1942 14 Sheets-Sheet 2 HEPruz'ZZ Nov. 12, 1946. H. E. PRUITT METALWORKING MACHINE Filed Dec. 3, 1942 14 Sheets-Sheet 5 L5] HEPT'IAZ'ZZ Nov. 12, 1946. H. E. PRUITT 2,411,110

METALWORKING MACHINE Filed Dec. 3, 1942 14 Sheets-Sheet 4 SEQ/mum NOV. 12, 1946. P n- 2,411,110

METALWORKING MACHINE Filed Dec. 3, 1942 14 Sheets-Sheet 5 gwumm Hi Pruz'ii Nov. 12, 1946. H. E. PRUITT METALWORKING MACHINE Filed Dec. 5, 1942 14 Sheets-Sheet 6 gnaw/whom HEPrZaZ'ZZ Nov. 12, 1546. H. E. PRUITT 2,411,110

METALWORKING MACHINE Filed Dec. 3, 1942 14 Sheets-Sheet 7 AiZ new Nov. 12, 1946. H. E. PRUITT 2,411,110

METALWORKING MACHINE Filed Dec. 3, 1942 14 Sheets-Sheet 8 Q HEPruZ'ZT NOV. 12, 1946. -f 2,411,110

METALWORKING MACHINE Filed Dec. 5, 1942 14 Sheets-Sheet 9 Qt ,f I

Filed Dec. 3, 1942 14 Sheets-Sheet 1O mm HEP? uz'fii Nov. 12, 1946. H. E. PRUITT METALWORKING MACHINE Filed Dec. 5, 1942 '14 Shets-Sheei 11 w 1; f WWW a M m a 1M W 7 Q I Q W 1 14 sheets sheet 12 V awe/whom 1.E.-P2"uiZZ lul r .1.

Nov. 12, 1946.

H. E. PRUlTT METALWORKING MACHINE Filed Dec. 3., 1942 Qib Nov. 12, 1946. H. E. PRUITT 2,411,110

METALWORKING MACHINE Filed Dec. 3, 1942 14 Sheets-Sheei: 15

v -Y mm\ 3mm Z'Pru iii mi W Q1 K Nov. 12, 1946. H. E. PRUITT METALWORKING MACHINE l4 Sheets-Sheet 14 Filed Dec. 3, 1942 3mm HE Pr uz'ZZ Patented Nov. 12,1946

2,411,110 METALWORKING MACHINE Harvey E. Pruitt, Greenville, Mich, assignor of one-twentieth to Gibson Refrigerator Company, Greenville, Mich., a corporation of Michigan and nineteen-twentieths to Emery M. Rice,

Hanna, Ind.

Application December 3, 1942, Serial No. 467,757

12 Claims.

This invention relates to metal working machines.

At the present time in the shaping of small objects out of metal, it is the practice to shape such objects on a machine known as a screw machine, but such machines are not entirely satisfactory from a production standpoint,- and from the standpoint of precision. It is, therefore, an object of quantity production considerably in excess of the present screw machines which when put into operation will release such screw machines for other vital work.

Another object of this invention. is to' provide a machine which while readily adaptable for the production in quantity of Various articles has been specially designed for the shaping of steel projectiles for the smaller caliber guns.

A further object of this invention is to provide a machine of this type which is automatic in its operation and which will accurately shape the opposite ends of a steel projectile in a single operation.

A further object of this invention is to provide a projectile forming machine which while capable of great quantity production is of quite simple construction and small in size.

A further object of this invention is to provide a metal working machine which is capable of shaping either one or both ends of a piece of metal, the machine being provided with an improved means for feeding the metal pieces to the shaping members, the feeding means alsoincluding means for ejectingthe finished metal pieces prior to the injection of a new piece.

A further object of this invention is to provide a machine which includes opposed rotatable cutting or shaping members, and a pair of article clamping or gripping members positioned between the shaping members for firmly gripping the article and holding it stationary during the shaping operation.

A further object of this invention is to provide a machine of this type which is positive in its operation, the rectilinea movement of the parts being effected in timed sequence by means of cams and levers.

This invention consists of the novel construction, combination and arrangement of parts as will be more specifically referred to and as illustrated in the accompanying drawings wherein is shown as embodiment of this invention, but it is to be understood that changes, variations and modifications may be resorted to which fall within the scope of the invention as claimed.

1 2 In the drawings: Figure 1 is a detail front elevation of a machine constructed according to an embodiment of this invention,

Figure 2 is a detail end elevation, partly broken away, of the machine, 1

Figure 3 is a top plan of the upper portion of the machine, of this invention to provide a machine capable Figure 4 is a detail front elevation on an enlarged scale of the upper portion of the machine,

Figure 5 is a sectional view taken on the line 5-5 of Figure 1, I

Figure 6 is a sectional view taken on the line 6-6 of Figure 4,

Figure '7 is a longitudinal section partly in detail of one of the spindle assemblies,

Figure 7a is a fragmentary longitudinal section of the forward portion of the assembly shown in Figure 7,

Figure 8 is a sectional view taken on the line 88 of Figure 6,

Figure 9 is a sectional view taken on the line 9-9 of Figure 2,

Figure 10 is a vertical section of the base portion of the machine, looking from one end thereof,

Figure 11 is a sectional view taken on the line ll-ll of Figure 5,

Figure 12 is a sectional view taken on the line [2-42 of Figure 5,

Figure 13 is a fragmentary plan view partly in section of the feeding structure,

Figure 14 is a sectional view taken on the line M-M of Figure 13,

Figure 15 is a sectional view taken on the line |5-l5 of Figure 13,

Figure 16 is a sectional View taken on the line iii-16 of Figure 13,

Figure 17 is a plan-view of one of the spindle operating cams,

Figure 18 is a detail end the cutter heads,

Figure 19 is a detail side elevation partly broken away and in section of one ofthe cutter heads,

Figure 20 is a sectional view taken on the line2[|29 of Figure 19,

Figure 21 is a plan View ofthelower anvil operating cam,

Figure 22 is a detail side elevation of one of the blank slugs or work-pieces,

Figure 23 is a detail side elevation of the slug or work-piece in furnished condition.

Figure 24 is a fragmentary sectional View showing in enlarged condition a portion of the structure shown in Figure 6,

Figure 25 is a fragmentary vertical section elevation of one of partly in detail through the center of the machine showing the anvils in open position and the carriage in slug receiving position,

Figure 26 is a view similar to Figure 25 but showing the finished slug discharged from the carriage and a new'slug gripped between the a-nvils or clamping members,

Figure 27 is a fragmentary sectional view taken on the line 2'|2l of Figure 1,

Figure 28 is a sectional view taken on the line 28--28 of Figure 5, and

Figure 29 is a plan view of the lower anvil or clamping member.

Referring to the drawings, the numeral 38. designates generally a hollow base or supporting structure on the upper end of which is mounted a bed, generally designated as 3|. The bed 3| includes a lower body 32 which is formed adjacent the opposite ends thereof with a pair of bearing members 33 and .34. The bearing members 33 and 34 are in axial alignment and the bearing member 33 has mounted therein for combined rotary and endwise movement a cutter assembly, generally designated as 35. The hearing 34 has mounted therein for combined rotary and endwise movement a cutter assembly, generally designated as 38. The two cutter assemblies 35 and 38 are of identical construction and th detailed description of one of these assemblies will apply equally as well to the other assembly.

An upper anvil or slug clamping member 3'! is supported by a supporting head 38 in a position wherebythe lower end portion of the anvil or clamping member 37 will be disposed medially between the inner confronting ends of the assemblies 35 and 36. A lower movable anvil or clamping member 39 is disposed in confronting position with respect to the upper anvil or clamping member 31 and coacts with the anvil 31 in firmly and tightly gripping a slug or workpiece 40 therebetween. The upper anvil or clamping member 31 comprises an elongated body 4| which is mounted in a channel 42 formed in the head 38. The body 4| is adapted to be maintained in vertically adjusted position by means of a plurality of clamping bolts or set screws 43 which ar threaded through the head 38 and engage the adjacent edges of the body 4|. The upper end 44 of the body 4| is cut off at an angle and a wedge block 45 is mounted in the upper portion of the channel 42 and bears against the upper end of the body 4|.

The block 45 constitutes a means for vertically adjusting the body 4|, and the block 45 is ad justed laterally with respect to the body 4| by means of a pair of opposed set screws 48 and 4'! which are threaded thr ugh the head 38. The body 4| is provided with pairs of elongated openlugs 48 and bolts 49 are extended through the head 38 and the openings 48 to provide a means for limiting the vertical adjustment of the clamping member 3'! in the head 38. The lower end of the anvil or clamping member 81 is provided with a reduced width portion 55 which of substantially less length than the space between the cutter assemblies 35 and 36 when these assemblies are shifted toward each other in their cutting operation.

The reduced lower or clamping end portion 58 of the anvil or clamping member 31 is formed with a concave recess or seat within which the slug 48 is adapted to seat. The slug 48 is adapted to be automatically ejected from th recess 5| by means of a slug ejecting member, g n ra y designated as 52. The ejecting member 52 comprises an elongated rod 53 which is slidable in a vertically disposed passage 54 provided in the body 4| and the lower end of the rod 53 is reduced as at 55 and slidably engages in a reduced passage or opening 56 formed in the reduced clamping member 50.

The upper end of the rod 53 has fixed thereto or formed integral therewith an annular flange 51 which is slidable in an elongated opening 58 formed coaxial with the opening or passage 54. A spring 59 is disposed in the opening 58 and bears at oneend against the flange 51 and at the other or upper end against a spring tensioning plug 58 which is threaded through the upper portion of the body 4|. The spring 59 constantly urges the slug ejecting pin 55 downwardly so that when the two clamping members or anvils 37 and 39 ar in released position the pin 55 will automatically and positively eject the slug 4!) from the recess 5|. v

The head 38 is formed integral with a supporting member 5| which is adapted to be secured by fastening members 52 and 53 to a table 64 which is carried by the bed 32 between and rearwardly of the bearings 33 and 34. The supporting member 6! is adapted to be accurately positioned with respect to the table 54 by means of a pair of dowels 65 which extend through the base portion 88 of the supporting member BI and engage the table 64.

The bed 8| is formed with a cylinder 81 within which a vertically movable piston 88 is slidable. The piston 68 has fixed to the upper end thereof a lower movable clamping head or anvil 69 which is formed at its upper end with a reduced clamping member H1 confronting the upper stationary clamping member 54. The upper side of the clamping member 15 is formed with a concave seat 1| confronting th seat 5| and within which the slug 48 is adapted to engage. The forward upper portion of the clamping member 18 is formed with a rounded portion 12, the purpose for which will be hereinafter described.

The body 69 of the lower clamping member is formed with an annular depending flange or skirt [3 which is adapted to loosely engage about the upper end of the cylinder 51 so as to prevent any removed material from contacting with the piston 68. A rock lever 14 is rockably mounted on a shaft 15 which is mounted in bearings 16 and 11 carried by the bed 3|. The lever 14 is connected with the piston 88 by means of a link 18 which at its upper end is mounted on a wrist pin 59 carried by the piston 88. The lower'end of the link 18 is mounted on a pin 8B which is carried bythe lever 14 upwardly from the shaft 15. The lever 14 is formed with an upwardly opening slot 8| within which the lower end of the link loosely engages and the piston 68 is formed with a' slot 82 within which the upper portion of the link loosely engages. The piston '68 adjacent the upper portion thereof is formed with a lubricating passage 83 communicating with a passage 84 carried by the cylinder 81 and an oil cup 85 is connected with the cylinder passage 84 by means of a pipe 88. The upper horizontal passage 83 communicates with a vertical passage 81 formed in the piston 68, and the lever 18 is formed with a lubricating passage 88 communicating with the passage 81. The passage 88 extends downwardly through the link or lever 18 and communicates with an annular lubricating channel 89 formed in the pin 8| The shaft 15 has formed integral with the opposite ends thereof a pair of eccentrically disposed stub shafts 99 and 9I which are journalled in the bearings I1 and 16, respectively.

The stub shaft 9I at its outer end is formed with a splined portion 92 on which a shaft adjusting arm 93 is fixedly mounted. Swinging adjustment of the arm 93 will raise or lower the lever I4 so as to thereby provide for the desired vertical reciprocation of the piston 69 in order to provide for the desired clamping pressure beingapplied by the clamping member I9 on the slug 49. The arm 93 is held in adjusted position by means of a pair of opposed threaded adjusting members 94 and 95 which are threaded through bosses 96 and 91 carried by the bed 32.

The lever 14 is provided with an offset extension 98 on which a roller 99 is mounted. The

roller 99 engages in a cam track I99 which is formed in a cam member I M mounted on a rotatable cam shaft I92. The cam shaft I92 (shown more clearly in Figure 6) is rotatably mounted in bearings I93 and I94. The cam shaft I92 hasfixed to one end thereof a sprocket I95 about which a driving chain I96 is trained. The chain I96 engages a driving sprocket I9I mounted on a drive shaft I98. The drive shaft I98 is connected with a gear reducing mechanism I99 of conventional construction which is operated from a shaft II9. The shaft I I9 has a pulley I II mounted on one end thereof and the pulley I II has a belt or flexible drive member II2 trained thereabout. The belt H2 is also trained about a driving pulley II3 mounted on a motor shaft H4 driven by a motor H5.

The base 69 of the clamping member 39 is secured to the piston 68 by means of fastening members II 6, and preferably positioning pins I I! which are seated in openings I I8 engage through the base 69 so that the clamping member 39 will be properly positioned with respect to the clamping member 31.

Referring now to Figure 7, the spindle assembly 36 which is identical with the spindle assembly 35 comprises a cylindrical sleeve II 9 which is slidable endwise in the bearing 34. The sleeve II9 has rotatable interiorly thereof a spindle or shaft I29 which is rotatable in anti-friction bearings I2I and I22 carried by the sleeve I I9. The outer end portion of the spindle I29 has an annular nut I23 threaded thereon which is adapted to abut against the outer side of the bearing I22. A grooved pulley I24 is fixedly mounted on the outer end of the shaft I29 being removably secured by means of a nut I25 which is threaded on the shaft I 29. The sleeve II9 at its outer end is formed with threads I26 on which a pair of lock nuts I2! are threaded. The nuts I21 provide means for limiting the inward sliding movement ofthe sleeve II9 during the cutting operation.

' The shaft I29 adjacent the inner end portion thereof is formed with an annular flange I29 outwardly of the anti-friction bearings I2l and asealing washer I29 is interposed between the flange I28 and the outermost of the bearings I2I. The shaft I29 at its inner end portion is formed with areduced threaded stud I39 and a pilot stud I3I which is disposed between the threaded stud and the flange I28. An annular ring-shaped boss I32 is formed on the inner side of the flange I28 and a tool chuck or head I33 is adapted at its outer end to bear against the ring-shaped boss I32. The chuck I33 is threaded onto the stud I39 and telescopes the pilot stud I3I. The sleeve II9 adjacent the outer end portionthereof is formed with an enlargedbore or chamber I34 and a ring I35 is'mounted in this enlarged bore and is adapted to provide a means for limiting the outward flow of lubricant which is discharged into the interior of the sleeve III9. The ring I35 is tightly pressed into the bore I34 and forms a reduced passage between the inner circle of the ring I35 and the periphery of the shaft I29. The sleeve II9 is formed with a longitudinal keyway I36 in the periphery thereof within which a key I3! is adapted to engage. The key I 31 is mounted in a forwardly opening slot I38 formed in the bearing 34 and the key I3I is removably held in the keyway I36 by means of set screws I39 which are threaded downwardly through the bearing 34 and engage the upper side of the key I31. The key I3'I holds the sleeve I I9 against rotary movement but permits endwise sliding movement of the sleeve II9 under the action of a sleeve operating lever I49.

The lever I 49 has one end thereof pivotally mounted on a threaded pivot member I M which extends through the lever I49 and is threaded into the sleeve II9. The lever I49 is pivotally mounted on a pivot member I42 carried by the inner end of a link I43. The link I43 is mounted on an eccentrically disposed pivot member I44 WhiCil is fixed to the rear side of the bearing 34 so that adjustment of the pivot member I44 will shift the center of the pivot I42 inwardly or outwardly to provide for the desired movement of the lever I49. 'The opposite or rear end of the lever I49 has rotata-bly mounted thereon a roller I45 which engages in a cam track I 46 formed in a cam member Ill. The cam member I4! is fixedly mounted on the cam shaft I92 which is driven by means of the motor II5 through the reduction gearing I99.

The chuck I33 is formed of a cylindrical body I48 which is formed with a plurality of circumferentially arranged triangular slots I49. The slots I49 are inclined inwardly and downwardly from the outer end of the body I48 and a plurality of cutter members I59 are mounted in the cutouts I49. Segmental clamping members I5I which are formed at their inner portions with longitudinal cutouts I52 engage in the segmental openings I 49 and are tightly secured therein by means of clamping screws I53. Tightening of the screws or bolts I53 which are threadedinto the body I48 as shown in Figure 20 will tightly clamp the cutter I59 in the seat orcut out I49. Each cutter or tool I 59 is formed with a bevelled inner end portion I54 against which a cutter adjusting screw I55 is adapted to engage. The screw I55 is mounted on an angle to the longitudinal axis of the body I48 so that inward adjustment of the screw I55 will force the cutter I59 outwardly of the chuck. In the present instance, there are three of these cutters but it will of course be understood that the number of these cutters may be varied as may be desired.

The periphery of the body I48 is formed with circumferentially spaced apart recesses or sockets I56 for receiving a spanner wrench and if desired. the front face of the chuck body I48 may be provided with similar spanner Wrench recesses I53. The pulley 124 is preferably a multiple grooved pulley and a plurality of driving belts I51 are trained about the pulley I24 and about a driving pulley I59- mounted on a motor shaft I59. The motor shaft I59 is driven by a motor I69 which is secured in vertically adjusted position to the front wall I6I of the base-or. supporting structure 86 by means of motor adjusting bolts I62. 7 The adjusting bolts I 62 extend through vertically elongated openings 1.63 which are formed in the front wall I6I. The motor I66 has connected therewith a switch I64 and the motor I65 for the spindle'assembly 35 has connected therewith a switch I66. The cam-shaft motor II has connected therewith a switch I61 and preferably the switches I64, I66 and -I-61 are so connected together that the switch I61 for connecting the motor II5 with the power source cannot be connected with the power source until both switches I 64 and I66 have been moved to a circuit closing position. In this manner the cam shaft I62 with the oper ating means connected therewith cannot be operated before the spindle assemblies 35 and 36 are rotating.

A horizontally reciprocable carriage I68 is slidable in opposed guides I69 which are secured to the table 64 by fastening members I16. The carriage I68 is reciprocated toward or away from the spindle assemblies 35 and 3.6 by means of a rockable lever I1I. The lever I1I is pivotally mounted as at I12 on a rearwardly projecting boss I13 carried by the bed 3| on the rear side thereof. The lever I1I has pivotally mounted in the upper end thereof a block I14 and the carriage I68 has a block I15 rockably mounted in a slot I16. The block I15 is mounted on a pin or shaft I11 extending through the slot I16 and mounted in the carriage I68. The two blocks I14 and I15 are adjustably connected together by a threaded adjusting Inember I18 which includes oppositely threaded portions I19 and I86.

The carriage I68 at its forward end is formed with a forwardly opening slot I8I which is of sufficient width to permit the arms I82 and 83 formed on opposite sides of the slot I8I to engage on opposite sides of the slug and clamping members 56 and 16 when the carriage I68 is in its forward'position. The carriage I68 is formed in the upper side thereof with an elongated passage I84 which at the forward portion of the carriage I66 rises upwardly as at I85. A bifurcated spring I86 which is provided with a base plate I81 is secured by fastening members I68 to the upper side of the carriage I68. The arms I89 of the spring I86 are disposed in overlapping position with respect to the slot I84 and are adapted to engage the opposite ends of a slug 46 which movably engages within the recess I84.

The forward ends of the arms I89 of the spring I86 are provided with upwardly offset slug retaining portions I96 for holding the slug 46 against movement lengthwise of the carriage 568. The arm I82 of the carriage I68 is formed with an upwardly opening slug seat I9I, and the arm I83 is formed with an upwardly opening slug seat I92 aligning axially with the recess I9I. The two recesses I9I and I92 comprise delivery recesses for ejecting the formed slug from the carriage I68 when the lower anvil or clamping member 39 is moved upwardly to a clamping or gripping position. i

In order to provide a means whereby the blank slugs may be fed to the carriage I68 at each reciprocation thereof, I have provided a block I98 which is secured by fastening members I96 to the upper sides of the guide members I69 adjacent the forward portions thereof. The block I93 is formed centrally thereof with a transversely extending connecting member I95 which is provided in the upper side I96 thereof with a concave slugseat I91. One side of the block I93 is formed with an upwardly opening slug guiding channel I98 aligning with the seat I91 and a slug guiding chute I99 is disposed in alignment with the guide chute or passage I98. The chute I99 is adapted to be correlated with a suitable hopper structure (not shown) for feeding the slugs downwardly to the block I93. The block I93 is formed with a slug guiding channel or hopper 266 forwardly of the connecting member I95, the hopper or channel being formed by a block 26I disposed in a cutout 262 formed in the block I98 and provided with wings 263 which are secured by fastening members 264 "to the forward face of the block I93. The slug supporting block or connecting member I95 is formed with a depending lug or extension 265 which is adapted to extend into the recess I84 between the arms of the spring I86. The spring I86 adjacent the rear ends of the arms I89 thereof is formed with an enlarged cutout 266 which is of a width slightly greater than the width of the channel I84 so that the slugs 46 dropping downwardly through the passage or hopper 266 may drop downwardly by gravity into the passage I86. At each forward movement of the carriage I68, a slug 461s kicked off from the seat I91 by means of a kick-off block 261 which is secured to a U -shaped spring 268. The spring 268 is formed with a right angular base portion 269 integralwith the rear leg 2H] thereof and the base 269 is secured between the heads of the fastening members I 88 and the upper side of the rear portion I81 of the spring I86. The kick-off block 291 on one end thereof is formed with a horizontally disposed wing 2 which is adapted to confront the adjacent end of the trough or chute I98 so that when the kick-off member 261 forces a slug from the seat I91 into the hopper 2-66, the next succeeding slug in the trough I98 will be preventedfrom moving onto the seat I91 until the carriage I68 has moved rearwardly to an inoperative position.

The carriage I68 is reciprocatedback and forth by means of a cam 2 I2 which is formed integral with the cam I6I at one end of the latter. The 1ever I1I has rotatab-ly secured thereto a roller 2I3 which is adapted to ride on the periphery of the cam 2I2. The cam 2 I2 is formed with a cam portion 2M offset inwardlyfrom the periphery of thecam and is also formed with a second cam portion 2 I 5 which is offset inwardly from the cam portion 2 I 6. The trailing end of the cam portion 2I5 merges with an outwardly extending cam portion 2I6, the purpose for which will be hereinafter described. The cam 2I2 also includes a dwell portion 2I1 Which is equal to substantially one-half of the circumference of this cam. The roller 213 is adapted initially to drop downwardly to the cam portion 2% and th lever "I is pulled forwardly under the action of a spring 2 I8 which is connected at one end to an ear 2 I9 carried by the lever I1'I. The spring 2| 8 at the opposite end thereof is connected to an adjusting bolt 226 so that the roller 2E3 will be yieldably held in contact with the peripheral-surface of the cam 2I2. The spring 2I8 is of sufficient strength to move the carriage I68 forwardly when the roller 2 I3 drops into the cam portions 2M and 2I5. At the time the roller 2I 3 engages the first cam portion 2I9,'the carriage I68 is moved forwardly to the position shown in Figure 25 where the slug receiving seats I9I' and I92 are disposed beneath the formed slug.

At this time the lower clamping member 39 is lowered under the action of the cam I-6I and the formed-slug drops into the seats I 9| and I being assisted in dropping into the seats NH and I92 by means of the spring pressed ejecting member 52. Continued rotation of the cam 2I2 will cause the roller 2I3 to drop onto the cam surface 2I5 thereby shifting the carriage I68 forwardly to the position shown in Figure 26. At this time, the slug 49 which is gripped by the gripping fingers I99 of the spring arms I89 will be disposed in confronting position to the clamping faces and II and the formed slug will be disposed forwardly of these clamping faces. The lower movable clamping member 39 will then be raised to a clamping position by means of the cam I9I which will rock the lever 98, raising the piston 68 to a clamping position. When the lower clamping member 39 rises to a clamping position, the formed slug 49 resting in the seats I9I and I92 will be lifted off from these seats and rolled forwardly by the curved ejecting portion I2 formed on the forward portion of the lower clamping member I9.

' The upward movement of the lower assembly 39 will lift the blank slug 49 from the recess I84 in the forward portion of the carriage I68, also raising the arms I 89 of the spring I36 to the position shown in Figure 26. Further rotation of the cam 2I2 through the cam portion 2I6 will cause the roller 2 I3 to effect rearward movement of the carriage I68 thereby pulling the spring arms I89 from the now gripped blank slug 49.

At the time the carriage I68 is at its foremost position, which is the position shown in Figure 16, a blank slug 49 will drop downwardly from the hopper 299 into the rear portion of the recess I84. Rearward movement of the carriage I68 will position the slug gripping fingers I99 over the slug which will be held against rearward movement by the lug or stop member 295 as the carriage I68 moves rearwardly. Upon forward movement of the carriage I68 to the combined discharge and delivery'position, which is the position shown in Figure 16, a second slug will be pushed off of the seat I91 by the push member or kick-off bar 291. The second or uppermost of the slugs 49 in the hopper 299 will provide sufficient weight so that the lowermost slug, which at this time is riding on the. upper surfaces of the spring arms I89, will be forced downwardly into the slug receiving channel I84 when the carriage I68 is in its foremost position.

In order to provide a, means whereby a cutting fluid may be discharged onto the cutters I 59, durin the operation of the machine, I have pro-,

- vided a centrally disposed bore 2 I4 which is provided in the spindle or shaft I29 and a communicating bore 2I5 is provided in the chuck I33.

. The outer end of the spindle or shaft has swivelly mounted thereon a connector 2H5 which is connected with a flexible hose ZII The hose 2I'I is connected at its lower end to an L 2 I8 mountedon the outer end. of a fluid conducting pipe ZIS. The pipe 2I9 extends into the base 39 and is connected with a pump 226 mounted interiorly of the base 39. The pump 229 has a pulley 22I connected with the shaft 222 thereof and a belt 223 is trained over the pulley 22 I and over a pulley 224.mounted on the motor shaft H4. The fluid which is ejected from the bore 2I5 in the head or chuck I33 drops downwardly onto the table 64 and then drops into a well 225 formed in the upper'portion of the base 39. The well 225 is provided with a sump 226 within which a, screen 221 is mounted. The screen 221 is mounted on the upper end of a suction pipe 228 which is connected with the suction side of the pump 229.

In the use and operation of this machine, the motors I69 and I65 are initially started by closing of the switches I64 and I66 in succession and then the switch I61 may be closed to start the motor H5. Rotation of the cam shaft I 92 by the chain drive I96 will rotate the several cams causing reciprocation by means of the cams I41 of the opposed sleeves H9. Prior to the inward move jment of the sleeves I I9 with the cutter heads I33, the carriage I68 will be shifted forwardly by means of the cam 2I2. The cam portion 2I4 on the cam 2I2 will cause the carriage I68 to hesitate or stop with the slug receiving recesses I9I and I92 positioned in vertical alignment with the recesses 5I and H formed in the gripping members 37 and 39.

The formed slug will drop partly by gravity and partly under the action of the ejecting .pin 55 into the recesses I9I and I92, whereupon continued rotation of the cam 2I2 will by means of the cam portion 2I5 cause the carriage I68 to move forwardly an additional distance bringing the blank slug 49 into vertical alignment with the seats BI and II. At this time, the cam I9I will effect upward movement of the movable clamping member 39 which will move between the arms I82 and I83 of the carriage :and will raise the blank slug to the position shown in Figure 26. Coincident or simultaneously with the gripping of the blank slug by the upward movement of the lower clamping member 39, the previously formed or shaped slug 49 which is disposed in the recesses I9I and I92 will be lifted outwardly of these recesses by the ejecting por tion 72 formed on the forward upper portion of the gripping element I9. The formed slug will then roll forwardly off of the end of the carriage and will drop into a hopper229 and move downwardly in a, trough or guide member 239 for discharge into a suitable receiver (not shown) which may be positioned adjacentthe machine.

In order to provide a means whereby the slug will be disposed in the same position at all times with respect to the two clamping members 31 and 39, I have provided a spring 23I which is mounted in the channel I84 of the carriage and bears against one end of the slug when the latter is in a gripping position beneath the gripping portions I99 of the spring fingers I89.

After the lower gripping member 39 has moved upwardly to a clamping or gripping position, the cam 2| 2 by means of the cam portion 2I6 will move the carriage rearwardly at which time a slug which has been pushed off of the seat I91 will be held against rearward movement so that the gripping fingers I99 may grip the slug dropping into the channel I84 at the rearmost position of the carriage I68. With the slug firmly gripped between the two clamping or gripping members 31 or 39 rotation of the cam shaft I92 will cause the opposed sleeves I I9 to moveinwardly toward each other thereby moving the cutter heads I33 to a position where the cutting members I59 will shape the opposite ends 1 of the slug. In the present instance, the slug I49 will have one end thereof shaped as at 232 andthe opposite end shaped as at 233 as shown in Figure 23. The completed or finished slug forms a projectile for insertion in a cartridge shell.

It will be understood that the spindle or shaft I20 is continuously rotating so that the slug 49 will be progressively cut and shaped during the inward movement of the opposed cutting heads 'iil I 33. After the slug has been shaped which operation occurs at the innermost positions of the cutters I50 and the cutter heads I33, the cam members I41 will effect outward movement of the sleeves H9 and at this time the carriage I68 is moved forwardly to a position where the recesses I9I and I92 are beneath the formed slug which is still gripped between the gripping orclamping members 3! and 39. The cam IUI will then effect downward movement of the lower clamping or gripping member 39 and the finished slug will drop into the slug receiving recesses I9! and, I92. .The further cycle of operation is a repetition of that hereinbefore described.

What I claim is:

1., In a metal working machine, a pair of confronting rotary cutter members, means reciprocating said members during rotation'thereof, a pair of opposed clamping members between the confronting ends of said members, means fixedly supporting one of said clamping members, means reciprocating the other cf said clamping members, a reciprocal carriage, means reciprocating said carriage, said carriage having a bifurcated forward delivery end engageable on opposite sides of said clamping members when said carriage is in a forward Work piece delivery position, and means yieldably holding a work piece on the upper side of said bifurcated end, said carriage being so positioned with respect to said clamping members that movement of said other clamping member toward clamping position will lift the workpiece from said carriage.

'2, In a metalworking machine, a pair of confronting rotary cutter members, means reciprocating said members during rotation thereof, a pair of opposed clamping members between the confronting ends of said members, means fixedly supporting one of said clamping members, means reciprocating the other of said clamping members, a reciprocal carriage, means reciprocating said carriage, said-carriage having a bifurcated forward delivery end engageable on' opposite sides of said' clamping members when said carriage isin a forward work piece delivery position, means yieldably holding a work piece on the upper side of said bifurcated end, said carriage being so positioned with respect to said clamping members that movement of saidother clamping member toward clamping position will lift the work piece from said carriage, said carriagehaving'opposed work piece seats at the forward end thereof, and. cam operated means for initially shifting said carriage forwardly to dispose said seats beneath the clamped work piece, the work piece dropping onto said seats upon movement of said other clamping member to released position, said cam operated means subsequently shifting said carriage forwardly'an additional distance to dispose a second work piece between said clamping members, movement of said other clamping member to clamping position also unseating the work piece from said seats.

3. In a work piece shaping machine, a reciprocal delivery carriage, said carriage comprising an elongated body formed with a channel in the upper side thereof, said body havinga bifurcated forward end, a bifurcated spring fixed to the upper side of said body with portions of the arms of said spring overlying the opposite longitudinal edges of said channel, stationary hopper means overlying said carriage, said springbeing formed with confronting cutouts in the rear portions of the arms thereof, a depending lug carried bysaid I2 hopper means and engaging iii-"said 'channelgbetween the arms of saidspring, a work piece holding seat rearwardly of said hopper, and delivery means fixed relative to said carriage engageable with the work piece on said seat for delivering the work piece into said hopper on each forward movement of said carriage.

4. In a work piece shaping machine, a reciprocal delivery carriage, said carriage comprising an elongated body formed with a channel in" the upper side thereof, said body having a bifurcated forward. end, a bifurcated spring fixed to the upperside of sad body with portions of the arms or said spring overlying the opposite. longitudinal edges of said channel, stationary hopper means overlying said carriage, said spring being formed with confronting cutouts in the rear portions of the arms thereof, a depending lug car'- channel between the arms of said spring, a work piece holding seat rearwardly of said hopper, delivery means fixed relative to said carriageyem ga'geable with the work piece on said seat for delivering the work piece into saidhopper on each forward movement of said carriage, means guiding work pieces to said seat, and means carried by said delivery means for cutting off said "guiding means when said delivery means is in delivery position.

5. In a metal working machine, a work piece clamping means comprising :an upper stationary clamping member, a lower reciprocal clamping member, said lower member comprising a vertically sl'idable body, a clamping head secured to the upper end of said body, a rock shaft below said body, a rock lever on said shaft, means for rocking said lever, link means connecting said lever with said body, eccentrically disposed stub shafts carried by the ends of said first shaft, bearings for said stub shafts, an adjusting arm fixed to one of said stub. shafts, and means holding said'arm in adjusted position. 1

'6; A metal shaping machine comprising opposed rotary cutter members, a stationary work clamping member, a complementary vertically movable clamping member, a work delivery carriage'mov'able "toward or away from said clamping members, and correlated timed means for movingsaid carriage to delivery position prior to the movement of said movable clamping mem her to clamping position, said carriage being formed with a work piece seat adapted to be disposed'beneath the work piece when the carriage is in its rearmost position to thereby receive the formed work piece when said movable clamping member moves downwardly to released position, forward movement of said carriage on thedelivery cycle thereof disposing the formed work piece in a position whereby upward movement of said movable clamping member to clamping engagement with a new work piece will 'lift the formed work piece from said seat and discharge the formed work piece from said carriage,

'7. A metal working machine comprising opposedrotary cutter members, a stationary'work clamping member, a complementary movable clamping member, a reciprocal work delivery carriage movable toward or away from said clamping members, means for reciprocating said carriage, and means correlated with said latter meansfor moving 'said'movable clamping mem: ber toward or away from said stationary clamping member, said carriage being formed with a work piece seat adapted to be disposedbeneath the work piece when the carriage is in its rear- 

